Improvement in steam-radiators



umrnn @FFIGE,

JOHN L. FRISBIE, or BROOKLYN, NEW YORK, ASSIGNOR TO MARSHALL 'r.

DAVIDSON, or sAME PLA E.

IMPROVEMENT IN STEAM-RADIATORS.

Specification forming part of Letters Patent No. 111,192, dated January24, 1871.

To all whom it may concern:

Be it known that I, JOHN L. FRISBIE, of Brooklyn, in the county of Kingsand State of New York, have invented a new and useful Improvement inSteam-Radiators, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawing, formingpart of this specification, and in whichsteam-condensing surface orsurfaces within a given space or compass, and the mutual supporting ofthe inner and outer tubes, together with lightness and cheapness in theconstruction of the radiator.

To these ends, the invention consists in a radiator composed of a seriesof corrugated steampipes or upright ducts, closed from communicationwith the atmosphere at their upper ends, but open at their bottoms to asteam-base, on which they are mounted, and receiving up through them acorresponding series of airtubes of slightly lesser diameter than thedistance between the interior projections of the corrugated steam-pipes,which, as-thus combined with the interior air-pipes, that are open topand bottom for the circulation of air up through them, form verticalcirculating-passages for the steam, and others for the confined air orsteam combined, as hereinafter more fully described, and present both aninside and outside radiating or steam-condensin g surface.

Referring to the accompanying drawing, A represents the base of theradiator, formed with an upper chamber or steam-space, that hasconnected with it, as at a and b, the necessary inlet and outlet pipesfor the live and condensed steam.

Mounted on this base, and in communica tion at their lower ends with thesteam-chamher thereof, is a series, consisting of any suitable number,of vertical ducts or outer pipes, B B, of a corrugated form or irregularshape in their transverse section, being composed, as it were, of a fewor limited number of vertical corrugations or hollow wings, c, forminginterior ducts d.

Projecting in a concentric relation up through these pipes B B are tubes0 0, open to the air at top and bottom, by passing through thesteam-space of the base and through stuffingbox-like projections on theupper or close ends of the outer pipes. These tubes G O are of slightlylesser diameter than the distance between the interior projectingsurfaces of the corrugated pipes B B.

The steam, being admitted at a, is somewhat obstructed by the air-pipe Opassing vertically through the chamber A, and is thereby divertedupwardly through the nearest ducts (I, while a corresponding diminutionof pressure on the opposite side of said air-tube will cause a downwardcurrent through the duct (1 behind it, thus keeping up a sufficientcirculation to expel the air from the series of ducts.

A radiator thus constructed may be composed mostly or wholly ofcast-iron, without a multiplicity of joints or intricate fitting, and isstrong and more or less ornamental; but its principal characteristicsare that a ready course is established for the steam up or with incertain of the ducts 01, while confined air is being expelled by theflow of the steam down or through the others, as above described, thuscausing the air to be driven out of the pipes B B, and effecting aperfect or free circulation for the steam through the radiator; also avery extended radiating or steam-con- (lensing surface for a given spaceor compass is established by reason not merely of the cor rugatedsurface of the outer pipes, B B, but of the specified combination andarrangement of the inner air-tubes, O O, with said corrugated. outerpipes, which combination and ar= rangement effect a double, or insideand outside, radiating surface for the steam in its sev eral courses upand down the radiator, thereby securing the condensation of the steambefore its escape, and largely contributing to the working economy ofthe radiator.

What is here claimed, and desired to be secured by Letters Patent, is-

The combination of the outer steam-pipes, B B, of corrugated form, ormade with hollow Wings 0, constituting interior ducts, d, and I servingto support the inner air-pipes, O O, with the base A, all arranged foroperation substantially as specified.

JNO. L. FRISBIE.

Witnesses FRED. HAYNES, HENRY O. BANKS.

